Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T10:31:06.969202Z
Paper Citation Record · LEDGER
As of 22 August 2026, this Paper Citation Record lists 26 of 26 outbound references and 0 inbound Pith citation observations for arXiv:1909.13636.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T10:31:06.969202Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-22T06:32:14.747728+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links
A source-named dated measurement, never combined with another source.
Source: cited_works
26 of 26 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 34260fa4-7382-4a57-a080-02491dff9c2d · outbound
Why Halley did not discover proper motion and why Cassini did Toomer, Ptolemy’s Almagest, 2nd ed
Reference 1
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 54fb055e-f3ef-4721-a442-45721a006c8e · outbound
Why Halley did not discover proper motion and why Cassini did In somnium Scipionis Commentarii
Reference 2
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 45b3b716-c0c0-49f4-87d4-fe6ab3fcce15 · outbound
Why Halley did not discover proper motion and why Cassini did Brahe, Astronomiae Instauratae Progymnasmata
Reference 3
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation ce1cbd95-7add-4626-a84e-9f2a51d8a81c · outbound
Why Halley did not discover proper motion and why Cassini did Halley, Considerations on the change of the latitudes of some of the principal fixt stars
Reference 4
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation da27f242-4a58-4585-a796-992a8483ac3a · outbound
Why Halley did not discover proper motion and why Cassini did Bullialdus, Astronomia philolaica
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 56e322e2-6f98-4726-a8f7-ba1a1c457ca7 · outbound
Why Halley did not discover proper motion and why Cassini did Cassini, Des variations que l’on observe dans la situation et dans le mouvement de diverses ´etoiles fixes
Reference 6
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 16fffa1f-2fc0-4e28-99a9-00604a6d2fbd · outbound
Why Halley did not discover proper motion and why Cassini did van de Kamp, Dark companions of stars
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 004aea2e-e600-4052-a8dd-05dfefa04053 · outbound
Why Halley did not discover proper motion and why Cassini did Brandt, St
Reference 8
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation eca538d8-3301-4ad4-b068-ca67369835d6 · outbound
Why Halley did not discover proper motion and why Cassini did Neugebauer, History of Ancient Mathemathical Astronomy, Vol.2
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 35012ed9-9d5d-4747-8d6a-21facac40dd8 · outbound
Why Halley did not discover proper motion and why Cassini did Hudson, Geographiae veteris scriptores Graeci minores
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 48389d7f-9fbf-43e4-b5de-3ddc271a4a6c · outbound
Why Halley did not discover proper motion and why Cassini did Kepler, Tabulae Rudolphinae
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 8b9ccee9-7b80-4119-8828-98bf839a5b42 · outbound
Why Halley did not discover proper motion and why Cassini did Flamsteed, Historia Coelestis Brittanica, Vol
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation f93bf1c8-6f5b-4b8a-a2c1-15ca653e8c16 · outbound
Why Halley did not discover proper motion and why Cassini did Verbunt and R
Reference 13
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation bc245f05-bb7d-4482-8ceb-7e246b754386 · outbound
Why Halley did not discover proper motion and why Cassini did Verbunt and R
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation b00918c3-2fcf-4808-b7fe-6402fb506640 · outbound
Why Halley did not discover proper motion and why Cassini did Lequeux, From Flamsteed to Piazzi and Lalande: new standards in 18th century astrometry
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation c111f1f8-ab16-44ec-b659-3a83455d3130 · outbound
Why Halley did not discover proper motion and why Cassini did van Leeuwen, Validation of the new HIPPARCOS reduction.Astronomy and Astrophysics 2007; 474: 653–664
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 0db7a297-3857-423d-8460-d550ec3f77a8 · outbound
Why Halley did not discover proper motion and why Cassini did Historia Coelestis Brittanica
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 693983ec-11ea-4f4b-a597-8801ed0ad658 · outbound
Why Halley did not discover proper motion and why Cassini did Westfall, Never at rest: a biography of Isaac Newton
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation e818b016-b768-45f8-a0c1-43e57596e1f1 · outbound
Why Halley did not discover proper motion and why Cassini did Seidelman, Explanatory supplement to the astronomical almanac
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 0496a304-de30-4e49-85da-6a2b2f38bcdc · outbound
Why Halley did not discover proper motion and why Cassini did Cook, Edmond Halley
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 27e67e0f-4cce-4f8e-85d0-fe9094320d91 · outbound
Why Halley did not discover proper motion and why Cassini did Morrison and F
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 4e0519ca-d7dd-4a91-b5ad-d235644db950 · outbound
Why Halley did not discover proper motion and why Cassini did Chapront and G
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 80c1e877-f31a-48db-98ea-d45612754b2e · outbound
Why Halley did not discover proper motion and why Cassini did Schaefer, Sky and Telescope1998; May: 57 see also S&T 1989, p.522; we use the Fortran implementation in libTheSky (http://libtesky.sf.nt) of VISLIMIT.BAS
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 5c047abf-5d67-4ea9-8599-f9801a276e3e · outbound
Why Halley did not discover proper motion and why Cassini did Heiberg, Claudii Ptolemaei Opera Astronomica Minora
Reference 24
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 4fa70387-bb05-41e6-a605-7e164a926d04 · outbound
Why Halley did not discover proper motion and why Cassini did Needham and L
Reference 25
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 16ffd506-d659-428a-aeb9-742214c1be47 · outbound
Why Halley did not discover proper motion and why Cassini did Ingram, The ligatures of early printed Greek
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
No inbound Pith citation observations are available.